Undef bunch of preprocessor macros defined by srtp.h.
Undef bunch of preprocessor macros defined by srtp.h.

synety-jdebp/rtpproxy,dsanders11/rtpproxy,synety-jdebp/rtpproxy,jevonearth/rtpproxy,dsanders11/rtpproxy,sippy/rtpproxy,jevonearth/rtpproxy,synety-jdebp/rtpproxy,synety-jdebp/rtpproxy,sippy/rtpproxy,jevonearth/rtpproxy,sippy/rtpproxy,jevonearth/rtpproxy,dsanders11/rtpproxy